All these Pumps follow the ANSI Pump Dimensions as well as the ASA 150 Flange Dimensions with raised faces. Investa offers these pumps up to 1200cu.mhr(6000GPM) and up to 150mts(500ft) of Differential Head. The main constructional features of these pumps are the following:The semi-open impeller helps in Slurry and solid handling with a particle size up to 0.5mm and slurry content up to 40 to 50%. This design of impeller also reduces the axial thrust on the bearings ultimately increasing the life of bearings.